Pipe-bending device



March 27, 1928.

J. SUNDGREN PIPE BENDING DEVICE Filed Nov. 22. 1926 glwuenloi /0///vSZ/A/DG/PEIV.

- cated in dotted lines Patented Mar 2?, 19258..

. some SUNDGREN, or DULUTH, man oes.

PIPE-BENDING ionvron' I Application filed November '22, 1926. SerialNO.149,809.

This invention relates to pipe bending devices, the principal object ofwhich is provide a more practical, and simple device of this characterthan heretofore known.

Other objects and advantages of the nvention will appear in the furtherdescrlption thereof.

Referring now to the accompanying drawing, forming part of thisappl1cat1on, and wherein like reference characters indicate like parts:

Figure 1 is a .perspective view of the improved shaping device; and

Figure 2 is a perspective view of the end of the jaw adjusting bolts.

1 represents a channel shaped metal frame or body portion to which thebending mechanism is attached, and this form of body portion isparticularly designed for engagement with a rectangularly shapedsupporting objectsuch as a post, horizontal timber or the like, forsecurely supporting said body portion. For securing the body por tion tothe post or other member I have provided the adjustable screw threadedbolts 2 through one side of the channel wall. Upon the back thereof isformed the integral arcuately shaped concavo-convex jaw or bendingmember 3, though the same may be permanently fixed to the body portionin some other manner if desired. The back of this fixed jaw is providedwith a round socket 4 which is internally screw-threaded and in directalignment with the hole 5 in the laterally projecting lug 6 on thecorner of the body portion spaced some little distance from the jaw 3.This arrangement is pro vided for the insertion of a handle indiat 7,which may be thrust through the hole 5 and engaged within the socket 4,the'end of said handle preferably being screw-threaded for suchengagement, so that in the event of not being able to conveniently mountthe device upon a post, timber, or the like, apiece of pipe, forexample, or rod screw threaded upon its extreme end may be insertedwithin these aligned holes 4 and 5 and the device thus permanently heldin lieu of other means of support.

Facing the jaw 3 is a like supported upon the back of the body portionby means of two externally screwthreaded bolts 9, spaced one above theother and supported within the lugs 10 formed integral with the back ofthe body. These jaw 8 adj ustably bolts are rotatably mounted within thehub like protrusions 11 on the back of the jaw 8, each bolt having anannular channel 12 spaced a short distance from the extreme end thereofas clearly shown in Figure 2, and the hubs 11 being provided withtransverse holes for registration with the channels 12, permitting of acotter pin 13 being placed therethrough when the bolts are in positionwithin their respective hubs, thus preventing accidental disengagementand yet allowing the bolts to freely rotate Without stress upon the jaw.While the opposite ends of the bolts may be provided with heads ifdesired I have shown them simply as squared, as at 14, for convenientapplication of a Wrench.

The operation of the device is as follows:

The body portion 1 may be clamped upon an upright rectangularly shapedpost, if such is convenient, or upon an iron rod such as illustrated at7 firmly held within a vise for example, when the round iron or pipe asthe case may be which is to be'bent is inserted vertically intermediateof the jaws 3 and 8, when the bolts 9 may be screwed up until the jawsimpinge the material to be bent. The bending is accomplished by applyingstress towards the support 7 for example, either or both ends of thematerial be ing bent in either direction as desired, only, however, tothe curvature represented b that of the jaws, and the adjustability ofwhich may be slackened for feeding thepipe or rod through to anyextentdesired, when the same may be again tightened for such bendingoperation. As the bolts 9 are independently adjustable, it is obviousthat either end of the adjustable jaw may be set up slightly in advanceof the other for the more delicate curvature of the object being bent.

From the foregoing it is evident that I have devised an exceedinglysimple and practical device wherein a piece of iron or pipe may beconveniently bent and the relative position of the bending jaws adjustedto accommodate different sized pipes, 01' assist in the bending process.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is:

1. A bending device of the class described comprising a channel shapedbody portion, means for rigidly holding same, an arcuately shapedconcave-convex jaw fixed to one face H Q v r 1,664,138

thereof, a second jaw spaced from the first opposite similarly shapedjaw normally mentioned jaw and of similar shape, and spaced therefrom,and a pair of spaced ad- 1 spaced adjusting means for independentlyjustable supporting bolts for said latter jaw moving opposite ends ofthe last mentioned for the purpose described. 5 jaw. In testimonywhereof I aflix my signa- 2. A bending device of the classdescribedtnre. comprising a body portion, a fixed arcuately shaped jaw upon oneface thereof andv an JOHN SUNDGREN,

